根据西安市主城区水文地质条件和环境保护条件，建立了西安市地下水源热泵适宜性评价体系，利用最小信息熵原理将主观赋权法（层次分析法）和客观赋权法（熵值法）相结合得到各评价指标的组合权重。在确定了评分体系的基础上，采用综合指数法得到西安市主城区水源热泵适宜性分区结果：研究区范围内，地下水源热泵适宜区面积为171.228 km2，较适宜区面积为369.234 km2，不适宜区面积为160.407 km2，禁建区面积为131.002 km2。研究结果为西安市水源热泵的规划选址提供了依据。

The suitability evaluation system of groundwater source heat pumps was constructed based on the hydrogeological and environmental conditions in Xi’an. The comprehensive weight of each evaluation index was determined using the combination method of subjective weighting method (analytic hierarchy process method) and objective weighting method (entropy method) based on the minimum information theory. On the basis of the determined scoring system, the comprehensive index method was used to determine the suitability zonation results of groundwater source heat pumps in Xi’an. The results indicated that the more suitable area for groundwater source heat pumps is about 171.228 km2, the less suitable area is 369.234 km2, the unsuitable area is 160.407 km2, and the construction forbidden area is 131.002 km2. The results can provide a scientific basis for planning and site selection of water source heat pumps in Xi’an.